Portable spray apparatus having a carrier frame

Abstract

The invention relates to a portable spray apparatus having a carrier frame, a blower and a storage vessel for a medium to be discharged. An upper unit with the storage vessel and a lower unit with the blower are retained on the carrier frame. The two units are located in the vertical direction of the carrier frame at a spacing (z) from each other. The spacing (z) is selected so that a movement gap is formed between the upper unit and the lower unit. To limit the resilient deflection of the upper unit, there is arranged on one of the units a damping stop which limits the movement gap and damps a resilient deflection of the upper unit by abutment of the damping stop on the other one of the units.

What is claimed is: 
     
       1. A portable spray apparatus comprising:
 a carrier frame defining an upward direction; 
 a blower; 
 a supply vessel for holding a medium to be applied by the spray apparatus; 
 an upper unit including said supply vessel and being configured to be held on said carrier frame; 
 a lower unit having said blower and being configured to be held on said carrier frame; 
 said upper and lower units being disposed in said upward direction at a distance (z) from each other; 
 said distance (z) being selected so as to form a movement gap between said upper unit and said lower unit; 
 a damping stop fixed on said upper unit and configured to delimit said movement gap and dampen an elastic deflection of said upper unit by a contact engaging of said damping stop on said lower unit; 
 said damping stop having a free end and being so mounted on said upper unit so as to cause said free end to come into contact with said lower unit after overcoming a spacing (b); 
 said damping stop being arranged such that:
 in a first state, wherein said upper unit is not deflected out relative to said lower unit, said damping stop is only in contact with said upper unit; and, 
 in a second state, wherein said upper unit is deflected out relative to said lower unit and said spacing (b) has been overcome, said damping stop is in contact with said lower unit and said damping stop acts to dampen via elastic deformation. 
 
 
     
     
       2. The portable spray apparatus of  claim 1 , wherein said damping stop is made of rubber. 
     
     
       3. The portable spray apparatus of  claim 2 , wherein said damping stop includes a holder and an elastic damping section arranged one behind the other in series. 
     
     
       4. The portable spray apparatus of  claim 3 , wherein said elastic damping section is made of rubber. 
     
     
       5. The portable spray apparatus of  claim 1 , further comprising anti-vibration elements each having a first end and a second end; said lower unit being supported on said carrier frame with said anti-vibration elements; said first ends of said anti-vibration elements being fixed to said lower unit; and, said second ends of said anti-vibration elements being fixed to said carrier frame. 
     
     
       6. The portable spray apparatus of  claim 5 , wherein said lower unit has anti-vibration elements having predetermined properties; and, the contact engagement of said damping stop on said lower unit defines a first damping step and, after said contact engagement, a second damping step is formed having a characteristic defined by the predetermined properties of said anti-vibration elements. 
     
     
       7. The portable spray apparatus of  claim 1 , further comprising an upper cantilever holding said supply vessel of said upper unit on said carrier frame and a lower cantilever holding said blower on said carrier frame. 
     
     
       8. The portable spray apparatus of  claim 7 , wherein said lower unit is mounted between said upper cantilever and said lower cantilever. 
     
     
       9. The portable spray apparatus of  claim 7 , wherein said upper cantilever deflects during operational use of said spray apparatus; and, said lower cantilever is configured to delimit the deflection of said upper cantilever. 
     
     
       10. The portable spray apparatus of  claim 7 , wherein said carrier frame and said upper and lower cantilevers are made of plastic. 
     
     
       11. The portable spray apparatus of  claim 1 , wherein said distance (z) between said upper unit and said lower unit forms a free space. 
     
     
       12. The portable spray apparatus of  claim 7 , wherein:
 said carrier frame includes a back plate configured to be attached to a user's back; and, 
 said upper cantilever and said lower cantilever each substantially adjoin said back plate at a right angle. 
 
     
     
       13. The portable spray apparatus of  claim 1 , wherein:
 said upper unit defines a longitudinal center axis; and, 
 said upward direction of said carrier frame corresponds to said longitudinal center axis. 
 
     
     
       14. The portable spray apparatus of  claim 1 , wherein:
 said damping stop is configured to dampen the elastic deflection of said upper unit through contact engagement of said damping stop with said lower unit in said upward direction of said carrier frame. 
 
     
     
       15. The portable spray apparatus of  claim 1 , wherein said spacing (b) corresponds to a maximum deflection of said upper unit relative to said lower unit. 
     
     
       16. The portable spray apparatus of  claim 1 , wherein the damping, which counters an elastic deformation of a force carrier, is made up of several damping stages. 
     
     
       17. A portable spray apparatus comprising:
 a carrier frame defining an upward direction; 
 a blower; 
 a supply vessel for holding a medium to be applied by the spray apparatus; 
 an upper unit including said supply vessel and being configured to be held on said carrier frame; 
 a lower unit having said blower and being configured to be held on said carrier frame; 
 said upper and lower units being disposed in said upward direction at a distance (z) from each other; 
 said distance (z) being selected so as to form a movement gap between said upper unit and said lower unit; 
 said upper unit being disposed, in said upward direction, completely above said lower unit; 
 a damping stop arranged on said upper unit and configured to delimit said movement gap and dampen an elastic deflection of said upper unit by a contact engaging of said damping stop on said lower unit; 
 said damping stop having a free end and being so mounted on said upper unit so as to cause said free end to come into contact with said lower unit after overcoming a spacing (b); 
 said damping stop being arranged such that:
 in a first state, wherein said upper unit is not deflected out relative to said lower unit, said damping stop is only in contact with said upper unit; and, 
 in a second state, wherein said upper unit is deflected out relative to said lower unit and said spacing (b) has been overcome, said damping stop is in contact with said lower unit and said damping stop acts to dampen via elastic deformation. 
 
 
     
     
       18. A portable spray apparatus comprising:
 a carrier frame defining an upward direction; 
 a blower; 
 a supply vessel for holding a medium to be applied by the spray apparatus; 
 said carrier frame having a back plate configured to be attached to a user's back; 
 an upper unit including said supply vessel and being configured to be held on said carrier frame; 
 a lower unit having said blower and being configured to be held on said carrier frame; 
 said upper and lower units being disposed in said upward direction at a distance (z) from each other; 
 said distance (z) being selected so as to form a movement gap between said upper unit and said lower unit; 
 a damping stop arranged on said upper unit and configured to delimit said movement gap and dampen an elastic deflection of said upper unit by a contact engaging of said damping stop on said lower unit; 
 said damping stop having a free end and being so mounted on said upper unit so as to cause said free end to come into contact with said lower unit after overcoming a spacing (b); 
 said damping stop being arranged such that:
 in a first state, wherein said upper unit is not deflected out relative to said lower unit, said damping stop is only in contact with said upper unit; and, 
 in a second state, wherein said upper unit is deflected out relative to said lower unit and said spacing (b) has been overcome, said damping stop is in contact with said lower unit and said damping stop acts to dampen via elastic deformation. 
 
 
     
     
       19. A portable spray apparatus comprising:
 a carrier frame defining an upward direction; 
 a blower; 
 a supply vessel for holding a medium to be applied by the spray apparatus; 
 an upper unit including said supply vessel and being configured to be held on said carrier frame; 
 a lower unit having said blower and being configured to be held on said carrier frame; 
 said upper and lower units being disposed in said upward direction at a distance (z) from each other; 
 said distance (z) being selected so as to form a movement gap between said upper unit and said lower unit; 
 a damping stop fixed on said lower unit and configured to delimit said movement gap and dampen an elastic deflection of said upper unit by a contact engaging of said damping stop on said upper unit; 
 said damping stop having a free end and being so mounted on said lower unit so as to cause said free end to come into contact with said upper unit after overcoming a spacing (b); 
 said damping stop being arranged such that:
 in a first state, wherein said upper unit is not deflected out relative to said lower unit, said damping stop is only in contact with said lower unit; and, 
 in a second state, wherein said upper unit is deflected out relative to said lower unit and said spacing (b) has been overcome, said damping stop is in contact with said upper unit and said damping stop acts to dampen via elastic deformation. 
 
 
     
     
       20. A portable spray apparatus comprising:
 a carrier frame defining an upward direction; 
 a blower; 
 a supply vessel for holding the medium to be applied by the spray apparatus; 
 an upper unit including said supply vessel and being configured to be held on said carrier frame; 
 a lower unit having said blower and being configured to be held on said carrier frame; 
 said upper and lower units being disposed in said upward direction at a distance (z) from each other; 
 said distance (z) being selected so as to form a movement gap between said upper unit and said lower unit; 
 a damping stop, wherein said damping stop includes two stop parts movable relative to each other; 
 a first one of said two stop parts being mounted on said upper unit and a second one of said two stop parts being mounted on said lower unit; 
 said first one of said two stop parts and said second one of said two stop parts being configured to delimit said movement gap and dampen an elastic deflection of said upper unit by a contact engaging of said second one of said two stop parts on said first one of said two stop parts; 
 said first one of said two stop parts having a first free end; 
 said second one of said two stop parts having a second free end; 
 said first one of said two stop parts being so mounted on said upper unit and said second one of said two stop parts being so mounted on said lower unit so as to cause said first free end to come into contact with said second free end after overcoming a spacing (b); 
 said first one of said two stop parts and said second one of said two stop parts being arranged such that:
 in a first state, wherein said upper unit is not deflected out relative to said lower unit, said first one of said two stop parts is only in contact with said upper unit and said second one of said two stop parts is only in contact with said lower unit; and, 
 in a second state, wherein said upper unit is deflected out relative to said lower unit and said spacing (b) has been overcome, said second one of said two stop parts is in contact with said first one of said two stop parts and said damping stop acts to dampen via elastic deformation.